丁二酸酐接枝纤维素纳米纤维膜及其重金属离子吸附

doi:10.11944/j.issn.1000-0518.2017.08.160299

摘要/Abstract

Abstract:

Triacetate cellulose(TCA) porous nanofiber membranes(Cell) with diameter of (110±28) nm were successfully prepared by thermally induced phase separation. Succinic acid anhydride grafted cellulose(Cell-g-SAA) nanofiber membranes were obtained through hydrolyzation and grafting of TCA nanofibers. The Cell and Cell-g-SAA membranes were used for the adsorption of Cu²⁺ and Pb²⁺. The adsorption kinetics and thermodynamics were studied and found to fit pseudo-second-order and Langmuir model. Compared with cellulose membranes, the max adsorption capacity of Cell-g-SAA membranes for Cu²⁺ and Pb²⁺ increases from 51.73 and 34.29 mg/g to 116.41 and 51.73 mg/g, respectively. The adsorptions of Cu²⁺ and Pb²⁺ on the Cell and Cell-g-SAA membranes are more agreeable with monolayer adsorption mode via mainly chemical interactions.

Key words: succinic acid anhydride, grafting, nanofibers, heavy metal, adsorption

陈培珍, 刘瑞来, 赵瑨云, 饶瑞晔. 丁二酸酐接枝纤维素纳米纤维膜及其重金属离子吸附[J]. 应用化学, 2017, 34(8): 891-898.

CHEN Peizhen, LIU Ruilai, ZHAO Jinyun, RAO Ruiye. Fabrication of Succinic Acid Anhydride Grafted Cellulose Nanofiber Membrane and Its Adsorption of Heavy Metal Ions[J]. Chinese Journal of Applied Chemistry, 2017, 34(8): 891-898.

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